AirLive WL-5420CAM - Manual (Page 38)

DDNS
Click the DDNS item of the Network submenu to bring up the
following page.
The camera supports Dynamic DNS (DDNS) feature, which
allows you to assign a fixed host and domain name to a dynamic
Internet IP address. Select Yes to enable this function, and then
fill in the required data in the User Name, Password and
Domain Name fields. Please note that you have to sign up for
DDNS service with service providers before using this function.
WL-5420CAM User’s Manual 37